Roller Bearing Core for SPANNERHANDS Spool System MK6

This is a ball bearing filament spool core for the nicely designed SPANNERHANDS Spool System MK6. The addition of ball bearings prevents binding and allows for ultra-smooth rolling of the spool.

The core diameter has been reduced from the original 52mm down to 48mm to be compatible with a greater number of filament spools.

The roller core takes 2 bearings with the following measurements:

32mm OD
13mm ID
10mm Width

A second version is available for bearings with an ID of 12mm.

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